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Hello. I am just learning Excel, so forgive me if there is a simple solution that I have missed! I am trying to find a way to calculate the difference between two letters of the alphabet in two different columns.

Column A is a set of letters of the alphabet indicating proficiency levels at certain time of year (where A is lowest, B is better, C is better sill, and so on through the alphabet to Z). Column B is another set of letters indicating proficency levels (From A through Z) at a different time of year.

I want to find the difference to show growth over time. For example, if the value at A1 is C and the value at B1 is H, the growth in C1 would be +5 levels.

Is there an easy way to accomplish this? Do I need to replace the letter A with the numeral 1, B with the numeral 2, C with the numeral 3, and so on to write this formula (and what is the easist way to do that?)

Thank you!

Michelle

All characters have what is known as ASCII values A=65 Z=90 a=97 z=122

ex.

A1 = "C"

B1 = "H"

C1 = CODE(B1) - CODE(A1)

= 72 - 67

= 5

A minor correction to wizard-fred's response.... As written, with the quotes around C & H, the formula will return 0 since CODE() returns the ASCII value of the first character of the string - the double quote. Since both strings start with a double quote, the math will result in a 0 answer.

The example should have been written as follows:

ex.

A1 = C

B1 = H

C1 = =CODE(B1) - CODE(A1)

= 72 - 67

= 5

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